Chemotherapy may cause myelosuppressive reactions, the most common of which is a drop in white blood cells, requiring the application of oral leukocyte-raising drugs. The most commonly used drugs are the Western medicine Rikokun Tablets and the Chinese medicine Diyu Boosting Tablets and Astragalus Boosting Capsules, which are more effective when combined with two or more kinds of drugs. If the leukocytes are lowered more, it is more effective to consider the application of subcutaneous whitening injections, which are divided into short-acting and long-acting whitening injections. After chemotherapy, you can also infuse fluids to supplement nutrition, such as infusion of amino acids, fat milk, etc., which also have the effect of raising white blood cells. In addition, it is necessary to pay attention to oral nutrition and appropriate supplementation of high-protein diet, which also has the effect of increasing nutrition and raising white blood cells.